Refractory Technology Mcqs for Chemical

Q.  Thoria__________________?

a. Has high fusion temperature (> 3000°C) but poor resistance to thermal shock
b. Has high resistance to basic slags
c. Which is expensive & radioactive, is used in crucibles for melting high purity metals
d. All A., B. and C.


ANSWER: See Answer
 
No explanation is available for this question!
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